Crooked Adam
D.E. Stevenson

But at the school where he is teaching, the headmaster, Sam Cooke, is a brilliant scientist. And Adam suddenly finds that the battleground is not the only place to fight a war - for Dr. Cooke has developed a deadly secret weapon and enemy agents are after the plans.
Adam and the doctor move to an engineering works in Scotland to build a working model of the weapon. Here, in the wild beauty of the Highlands, Adam is drawn into a desperate game of cat and mouse with the enemy - and he meets Brenda, who is young and beautiful and in terrible danger…
Praise for Crooked Adam:
'Romantic spy novel with first-class characterisation' - Manchester Evening News
'Call it, if you like, a spy story, but note that it has gained immeasurably by being, also, good D. E. Stevenson' - New York Times
Dorothy Emily Stevenson (1892–1973) was a best-selling Scottish author and second cousin of Robert Louis Stevenson. In a career that lasted more than 40 years, she published many books and during her lifetime sold more than seven million copies in the UK and USA alone.